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Nous voici dans le 74ième épisode de Quantum, le podcast mensuel francophone de l’actualité quantique.
Et tant de news, anecdotes et analyse à partager en compagnie de Fanny Bouton. Au menu, nous avons toujours plein d’événements, et surtout la saison des prix Nobel de physique et les dernières annonces de Google. Sans compter diverses actualités des startups françaises que nous suivons de très près.
Et toujours au menu, le transcript et les liens utiles du podcast.
Evénements passés
Q2B 2025 Paris : toutes les vidéos de la Q2B Paris de septembre 2025 sont disponibles. Avec notamment la forte présence de Quandela avec les interventions de Pascale Senellart, Shane Mansfield, Xavier Pereira et Thomas Volz. Et aussi Loic Le Loarer sur la stratégie nationale quantique. Au passage, mes propres interventions : The energetic challenges of FTQC et An End-User View of Hardware Roadmaps.
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Understanding quantum computing’s pace of progress is not an easy task. Recent months have complicated it with contradictory messages. CEOs like Jensen Huang (Nvidia) and Mark Zuckerberg (Meta) estimated that useful quantum computers were decades away, while others like Satya Nadella (Microsoft) and Sundar Pichai (Google) cast it as being just years from now. Some companies even stated that quantum computers would soon run LLMs more efficiently, with a lower energy footprint than classical HPCs running Nvidia GPUs.
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Microsoft captured quantum news headlines on February 19, 2025 by publishing an arXiv blueprint for its future fault-tolerant quantum computers (FTQCs) using Majorana fermions, a Nature paper about the measurement of Majorana Zero Modes (MZMs) in a chip containing the equivalent of half a physical topological qubit, and then a press release summarizing the whole and introducing a Majorana-1 chip with a complete physical qubit based on four MZMs.
The company then predicted that (their) useful quantum computers were just years away, not decades, and inline with a recent prediction from Bill Gates. As was the case with Google Willow in December 2024, many folks broadcasted the gospel. Likewise, recent news abound coming from Amazon with its Ocelot cat-qubits chip and PsiQuantum with its Omega photonic chip, all based on previously disclosed arXiv papers, released respectively in September 2024 and April 2024. In a scale of difficulty of understanding, cat-qubits are easy, measurement based photonic quantum computing is much harder, and topological and Majorana qubits are even harder.
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